Current evidence suggests that IUDs prevent pregnancy primarily by
A)stopping ovulation.
B)creating a sperm barrier.
C)causing a spontaneous abortion.
D)preventing fertilization.

Question

Quizplus · Accepted Answer

Current evidence suggests that IUDs prevent pregnancy primarily by preventing fertilization. The copper in copper IUDs is toxic to sperm, while hormonal IUDs thicken cervical mucus, which makes it difficult for sperm to reach the egg. While IUDs may also affect implantation, their primary mechanism of action is preventing fertilization.

Current Evidence Suggests That IUDs Prevent Pregnancy Primarily by